Friends, we need to ask some simple questions!
QUESTION 1: Is Upper Lovelady in Wiegman on the landing or one step down?
ANSWER: He must be one step down because otherwise he, at similar height to Prayer-Man-If-On-Landing height, is too small to be the 5"8?' we know him to be.
QUESTION 2: Is Lower Lovelady in Wiegman one or two steps down?
ANSWER: He must, because of the answer to Question 1, be two steps down.
QUESTION 3: Is Prayer Man in Wiegman on the landing or one step down?
ANSWER: He must be one step down, otherwise it becomes impossible to replicate the very short distance Wiegman shows from his right elbow to the redbrick section:

QUESTION 4: Does Prayer Man change steps between Wiegman and Darnell?
ANSWER: No good reason to think so!
QUESTION 5: If Prayer Man is one step down, what height is he?
ANSWER: 5"9'.
QUESTION 6: What height was Lee Harvey Oswald?
ANSWER: 5"9'.